Inverted incandescent gas-lamp.



N0. 812,961. PATENTED FEB; 20, 1906.

T. STB'INIGKE.

INVERTED INGANDESOENT GAS LAMP. APPLICATION FILED NOV. 29, 1904.

- Prussia,

descent Gas-Lamps, is a specification.

UNITED- THERESE STEINICKE, OF BERLIN, GERMANY. INVERTED INOANDESGENT'GAS-ILAMP.

are. 812,961.

Specification of Letters Patent.

Patented Feb. 20, 1906.

'i uman r led-Hovember 29, 1904. Serial No. 234,793.

To all whom it may concern:

Be it known that I, THERESE STEnvroxE, (ne'e-KARWINSKY,) a subject of the King of and a resident of No. '55 Pariserstrasse, Berlin, in the Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Inverted Incanof which the following My invention relates to improvements in inverted incandescent. gas-lamps of that kind in which a-n incandescent mantle or a pluraltop of the said b y;

' difficulties, By applying a globular or otherwise sha ed I from that of good a I other,

4 above the same.

ity of such mantles is surrounded by a globu- 'f glass or other lar or otherwise'shaped bpd suitable material, open at. t e top and closed at the bottom, into which body the atmose pherie air necessary for the combustion of the mixture of gas and air issuing from the burner-tube into the mantle enters from the open top, while the heated productsof com bustion rising fromland around the incandescent'mantle e'sca e' from-the same open It has been experienced that lamps of such kind the globe or body surrounding the mantle be not constructed with considerable width the current of fresh air entering the globular body from the to encounters the current of rising products 0 combustion, and the two currents, counteracting each other, prevent as well a sufficient supply of fresh air to the outside of the mantle as also a ready escape of' the products of combustion. O to such the lamps of the kind escribed hitherto failed to give satisfactory results.

body to surround the mantle with a consl erable distance a art- 11. 6., a body of considerable width with relation to the diameter of the mantle-the difiiculties before mentioned ma indeed be part1 overcome; but lampglo es of such widt are objectionable as well from the point of view of practical use as pearance. To prevent ore mentioned- 11. 0., the of fresh atmos heric air and the rising current of products 0 combustion-from meeting and. counteracting each it has been tried to se arate said currents by a chimney locate either to surround the Lncandescent-mantle or arranged the two currents be descending current ney surrounding the incandescent mantle or placed above the same may in some degree serve to separate the said two it is obj ectionable from .otherjpoints ofviem,

0t er, and the freshair of com cording to my invention further The application of a ch1mcurrents; but I rent of fresh atmospheric air entering the globular bodyfrom t e 0 on top will be separated from the current 0 the rising products of combustion in such a manner that the two in each other will assist and su ustion ,mstead of being supplied 'to the incandescent mantle in a directlon opposite to mixture of gas and'air issuing burnertube will be fedonto the mantle not only from below, but particularly :from the sides of the same, and a com lete combustion of the mixture oi gas and air is obtained all around the mantle.

The means employed according to my invention for obtamin the results before described may further e' utilized for reflecting the light of the incandescent mantle in a downward direction, and the construction of the inverted incandescent gas-lamp acallows of introducing the mantle into its holding-socket from the upper side of the same, thus facilitating the exchange of the mantle without the necessity of removing the glass of the lamp.-

In the drawings an invert-, ed incandescent gas-lam constructed accordin to my invention has con illustrated.

igure 1 is a vertical section through the lam constructed for the use of a single incan escent mantle. Fig. 2 is a plan of a socket for holding a plurality-say threeof incandescent mantles at a time.

Referrin to Fi 1,0 is the accompanying 4 incandescent mantle, an I; the urner-tube delivering the mixture of gas and air into the mantle in the usual manner. i

c is a body of glass or other suitable material of globular or any other suitable shape, closedat the bottom and open at the top.

The mantle a; secured to a ring 1), of magnesia orthe like, as usual, is supported by a socket.e, which may be made integral with the gallery (1 or secured to the same by-s'uitable means. The mantle a is surrounded by a shield s or shields, preferably of the shape of atruncated cone and having a central a erture for receiving the mantle a, with a su cient play. The said shield or shields 8 may be shaped more or less flat, or they may more or less approach the cylindrical form. I refer to arrange the said shield or, shields 8 around the upper portion of the incandescent According to the present invention the curcurrents instead of meeting and counteractport each.

that of the I from the mantle d or but sli htl-y above the same, still within the surrounding body a. dent that the fresh atmospheric air entering the body at the top will passdown Within same in the direction of-the arrows f, while the heated products of combustion rising from and around the incandescent'mantle c pass upward within the annular space be tween the said mantle and the shield or shields 3, being prevented by the said shield or shields from spreading and escaping to the sides. The current oi hot products of combustion rising centrally within the said shields s will draw the fresh ir. pouring into the bodyc toward the mantle c in a direction slightly rising toward the central portion or mantle (L,

thus being supplied to the sides of the mantle and all around thesame without an accelerated motion of the kind obtainedby a ohim ney surrounding the mantle,- The two currents, one rising centrally in a vertical direc--. tion nd the other rising in an inclined direction toward thecentral portion, will assist each other in their common rising tendency ins-teed ofencountering and counteracting each other. The atmospheric air passing be tween the two shields s and in contact with the same will undergo a preliminary heating of light of the mantle effect before'reaching the incandescent mantie, and the heated state 01 the air will assist the process'of combustion and the emission The said shields s will equally serve to maintain the burner-. flame in a uniform and-quiet-state by preventing any agitation of the outside atmosphere from reaching the mantle a, protected by the said shields s. :Ijprefer to make the lower shield 3 of glass or mica and-to provide thelower L face ofthe upper snield s with a suitable lie or polish to reflect the light cfthe in a downward direction. if a single be employed, it may be con- 'st' ucte'c or prepared to form: a reflector 1n the I meari not s own in the drawings.

m'an'ner deed bed If two or more-shields be applied, t'heyare arranged at a suitable distance" and they other cr'tothe galleryd by any suitable I As sheen stated" above; the shield or shields are provided wit-ha central aperture for re lin the mantle ,c'a'r'i'd its socket e. For the together with its holdifrig-ring'p, into the sockets from' th'e'upper' sidelot'the same, the said socket and the gallery" (1;, holc11ng the socket e, are so' constructed ft'o be removed ub'e To this eflect Val i-1 .7 ious'rceans mayb i consists Ii'SQGUTIllg the tubu- ,fron'r the burnout ltwill be eyiare secured to each.

our -osc or" introducing the mantle l o. 1

"The'most con l .05, being secured to the arms m n by screwbolts' and nuts h, might beadjustably secured to said arms m n by screws or bolts of a greater length, allowing of lowering the gallery (1, socket e, and shields sfrom the burner tube 1) in a convenient manner for the purpose of placing the mantle a into the socket e from the upper side of the same.

Instead of employing asingle burner tube b and a single incandescent mantle w in the lamp described a plurality of burner-tubes and mantles a might be arranged in a known manner within a common surrounding body 0. In Fig 2 I have illustrated three sockets e for receiving each an incandescent mantle a, and the said three sockets care surrounded by a common shield s of the kind described with reference to Fig. l. The globes of the lamp in such case would require an increased width, and three burner-tubes would be required tosupply the and air to the three separate mantles.

I. claim as my invention'- 1. In a lamp of the class described, the combination with a burn cit-tube, a frame supported thereby, a globe carriedby'the frame, a socket connected to the frame having openings therein, a mantle carried by said socket and an annular shield extending downwardly i'roin thesocket into the lobe, said shield surrounding the mantle, substantially as described; j

V 2. In a lampof the class described, the combination with a burner-tube, a frame supported thereby aglobe carried by the frame,

tially' as, described.

. In witness whereof I have hereunto set my hand in presence of two witnsesses.

' THERESE STEINICKEQ 1 evi itnesses;

1 a, IVOI LD ML HAur'T. 

